3d-printing

## What I do - Design 3D models for printing - Select appropriate printing technologies - Optimize prints for material and strength - Troubleshoot printing issues - Post-process printed parts - Configure slicer settings ## When to use me When creating physical prototypes, custom parts, or manufacturing with additive technologies. ## Key Concepts ### Printing Technologies ``` FDM (Fused Deposition Modeling): - Materials: PLA, ABS, PETG, TPU, Nylon - Low cost, accessible - Good for prototypes SLA (Stereolithography): - Materials: UV resin - High resolution, smooth finish - Ideal for detailed parts SLS (Selective Laser Sintering): - Materials: Nylon, TPU powder - Strong, functional parts - No support structures needed Metal 3D Printing: - DMLS, SLM - Aerospace, medical applications - High cost, high performance ``` ### Design Guidelines ``` Wall Thickness: Minimum 0.8mm (FDM) Overhangs: Limit to 45° or use supports Tolerances: 0.3-0.5mm for fits Orientation: Strength varies by axis Infill: 20-100% depending on use ``` ### Slicer Settings ```python # Key parameters layer_height: 0.12-0.28mm print_speed: 40-80mm/s temperature: 200-260°C (PLA/ABS) bed_temperature: 60-110°C retraction: 4-8mm distance ``` ### Troubleshooting ``` Layer separation: Increase temperature Stringing: Adjust retraction Warping: Use glue stick, heated bed Clogging: Clean nozzle, reduce temp Poor adhesion: Level bed, clean surface ``` ### File Formats - STL: Standard for 3D printing - OBJ: With textures - AMF: With material info - G-code: Printer instructions ### Post-Processing - Sanding and smoothing - Painting and finishing - Acetone smoothing (ABS) - Epoxy coating - Support removal